A total of 51 patients were included: 34 (66.7%) with MS and 17 with NMO
/NMOSD. Among MS patients, 62% were female, with an average age of 34.0 years. 97% were of African ancestry. 97% had relapsing-remitting MS. The average time from symptom onset to diagnosis was 4.8 years. Optic neuritis (41.2%) was the most common initial symptom, followed by hemiparesis (14.7%) and sensory symptoms (9%). On average, patients consulted 2 sub-specialists before diagnosis, with general practitioners (50%) and ophthalmologists (41%) being the most common. The average EDSS score was 3.4. Vitamin D levels were measured in 12 patients, with an average of 21.35 ng/ml. Of the patients, 35% were on disease-modifying therapies, with 92% on ocrelizumab and 8% on rituximab.
Among NMO/NMOSD patients, 76.5% were female, with an average age of 31.0 years. All were of African ancestry, and 59% had a positive aquaporin-4 antibody. The average time from symptom onset to diagnosis was 1.4 years. Paraparesis (35%) was the most common first symptom, followed by optic neuritis (29%) and sensory symptoms (18%). Patients consulted an average of 2 sub-specialists before diagnosis, with general practitioners (53%) and ophthalmologists (24%) being the most common. The average EDSS score was 4.4. All patients were on treatment, with 76.5% on steroids; for steroid-sparing therapy, 53% were on azathioprine, and 29% were on rituximab